It's available in the documentation that comes with Xcode. If you go
to NSColorSpace's class reference, there's an item in the TOC on the
left named "Color Programming Topics for Cocoa." If you click on that
link then on the "About Color Spaces" link, that will take you to a
good overview.
One thing to take away is that the color space only defines the colors
that can be produced by a particular color model, not whether or not a
particular pixel has an alpha component. So for example, if you were
using a NSDeviceRGBColorSpace instead of NSDeviceWhiteColorSpace, you
could have pixels with the format RGB, BGR, ARGB, ABGR, BGRA, RGBA,
depending on how the pixels are laid out (bitmap format). Notice that
some of the formats have alpha (A) and some don't even though a single
color space was specified.
On May 31, 2010, at 3:27 PM, Simon Raisin wrote:
Thanks Seth. I haven't been able to find any good docs on this
stuff. Do
you happen to know where I can read conceptual material about color
spaces?
On Mon, May 31, 2010 at 1:11 PM, Seth Willits <sli...@araelium.com>
wrote:
On May 31, 2010, at 4:06 AM, Simon Raisin wrote:
Thank you so much for the responses guys. This is the reason I
was confused:
NSDeviceWhiteColorSpace
Device-dependent color space with white and alpha components
(pure white is 1.0)
Available in Mac OS X v10.0 and later.
I thought that NSDeviceWhiteColorSpace had BOTH a white and alpha
channel.
It does. Colorspace != bitmap format.
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